green



Mar. 6, 1923.

4 ys. n. GREEN.

AIR SUPPLY CONTROL DEVICE.

FILED NOV. 16.192I.

l Img/WZ? l j Mig@ will not remain in the crank case.

It is also desirable to take the air from the crank case for the reason that with a device of the kind herein shown, any exhaust gases may have escaped past the pistons and gone into the crank case to be drawn out through the pipes 19 and. 20 and i find that l am thus able to keep my oil considerably cleaner than would otherwise be possible.

Another advantage ot the construction here shown. wherein the air is drawn the entire length of the crank ease, arises from the fact that the cool air helps to cool the lower part of the engine and assists in preventing overheating ot' the bearings.

M v device is ot very simple and inex- 'pensive construction and can be readily and'easily niad and installed on a car or tractor.

I have shown the device in my drawings for purposes of illustration, as mounted on an. ordinariy Ford engine, but it will be seen that the device ma).vv be readily adapted for installation on a great variety of makes of engines.

(,onsiderable eontrol of the air flow through the crank case is afforded b v means of ay damper 28 and the operatingV mechanisin therefor. Bj; varyingr the size of the opening Q75 more or less air can be dravvn through the crank ease, and less or more mamie air Will'be taken from the atmosphere directly.

Some changes may be made in the construction-and arrangement of the various parte of my device, Without departing from the essential features and purposes of-my invention, and it is my intention to cover by my claim, anyv modified 'forms of strnc ture, or use of -niechanical equivalents, which may be reasonably included Within their scope.

l claim as nay invention: 'I ln combination with a motor vehicle having a floor board.l a `clash, and' an engine provided with a c ank case and a' carburetor, a pipe eoninnniieating with' the breather of the crank ease.y a second pipe communicating with said first pipe and communicating with the air intake tube of the carburetor, a breather pipe extending from the crank case to a considerable. distance thereabove and through the floor boards, a screen enclosing the upper end or' said breather pipe, the upper end of the firstpipe having a rotatable valve for regulating the Size of opening therein. and a rod connected with said valve and extending through the dash, where it may be manipulated for controlling the valve.

Des Moines, Iowa, November 4, 19221.

s'rnriinn n. enana., '4, 

